Home / 38,776.05-58,161.96-12,478.77

Finding the Fourth Proportional to 38,776.05, 58,161.96 and 12,478.77

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Solution

The fourth proportional to 38,776.05, 58,161.96 and 12,478.77 is: 18,717.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,776.05 : 58,161.96 = 12,478.77 : x
  2. Step 2: Convert to fraction form
    38,776.05/58,161.96 = 12,478.77/x
  3. Step 3: Cross multiply
    38,776.05x = 58,161.96 × 12,478.77
  4. Step 4: Simplify right side
    38,776.05x = 725,789,721.59
  5. Step 5: Solve for x
    x = 725,789,721.59/38,776.05
  6. Step 6: Final answer
    x = 18,717.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.